I had to park my 95 Mystique (4 cyl Zetec engine, 150,000 miles) for the past few days, because it stalls out after driving 2-3 miles. It will restart after sitting for 10 minutes or so, but then stall out again after driving another 2-3 miles. (Needless to say, this doesn't make for a very speedy commute!) It's had a CEL on for the past 6 months, but it's never affected driveability before. Any advice on where to start?